CN1177935A - Method and apparatus for producing helically wound cock-seam tubing - Google Patents
Method and apparatus for producing helically wound cock-seam tubing Download PDFInfo
- Publication number
- CN1177935A CN1177935A CN96192419A CN96192419A CN1177935A CN 1177935 A CN1177935 A CN 1177935A CN 96192419 A CN96192419 A CN 96192419A CN 96192419 A CN96192419 A CN 96192419A CN 1177935 A CN1177935 A CN 1177935A
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- Prior art keywords
- mentioned
- seam
- locked
- belt
- forming head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Metal Extraction Processes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Gasket Seals (AREA)
- Forging (AREA)
- Moulding By Coating Moulds (AREA)
- Wire Processing (AREA)
Abstract
In a method for producing helically wound lock-seam tubing (33), a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device (30-40) forms interlocking spaced deformations (41) on the lock-seam (37). An apparatus for such production comprises a clinching roller (30) provided with a recess (40) for forming the deformations (41) against a counter-roller.
Description
The field of the invention
The present invention is about production helically coiling pipe, particularly about produce the method and apparatus of helically wound cock-seam tubing with the panel metal band.These pipes can be used for ventiduct system as an example.Prior art
The BP publication number is that GB2213748 discloses the machine that helically wound cock-seam tubing is produced in a kind of known being used to, and here the disclosure file is as the reference data.In this machine, metal tape is delivered to forming head by drive roller arrangement, and helically wound cock-seam tubing is processed by the pinch roll that forming head is housed.
The machine that the helically coiling pipe is produced in another kind of known being used for is disclosed in british patent specification GB1168178, wherein Fig. 3 and the different seam of 4 expressions.
The technology of relevant this class machine is known to those skilled in the art.The various machines that further develop of similar kind also can obtain on market now.Yet these machines still have some special defectives.
In the production of machinery helically wound cock-seam tubing with existing kind, locked-seam has the tendency of slip, thereby causes the undesirable variation of pipe diameter.Usually the method that solves this class problem is to increase the pressure that acts on the locked-seam pinch roll on the forming head.But increase clamping pressure like this and can cause damage, and can produce defective at the adjacent part of the metal tape of locked-seam and processing tube.Because of the adjustment of clamping pressure is vital to the quality of locked-seam and final products pipe.
Except that clamping pressure, the work of operating machines must be considered some other parameters, such as the thickness of metal tape, and lubrication, the possible wearing and tearing of the roller of different machines part.Therefore, just very high to the requirement of operating personnel's technology and experience.
Except operating personnel's technology, be difficult to avoid the slip in locked-seam or skid.In process of production promptly at the forming head rear or in storage life, lifting and the delivery period of pipe, undesirable increase will appear in the diameter of pipe.Should be noted that the slip owing to locked-seam, pipe diameter also undesirable reducing can occur, and caliber just reduced when for example it was subjected to external pressure.
The variation of pipe diameter is a problem always, because the pipe of sending can not satisfy user's technical specification and requirement.
When pipe being used in the ventiduct system that is loaded on different buildings, can run into some specific questions.For example, the vibration that is caused by blower fan and similar equipment can cause the slip of locked-seam, thereby causes undesirable air to leak and pressure decline.Under abominable situation, the security function of the whole ventilating system of locked-seam slip entail dangers to of ventilation shaft.
In ventiduct system, different joints is installed to as on the helically wound cock-seam tubing that constitutes this system's major part.These joints are bend pipe, T type member, air door, silencer etc., and they are inserted in the end of pipe usually, and the insertion portion of joint has a sealing ring to guarantee security seal.If but the diameter of undesirable increase has appearred in pipe, just there is a kind of danger, promptly the joint between joint and pipe can not enough seal, and this just may cause leakage above-mentioned or pressure decline problem, thus produce power loss and increase running cost.
In another case, joint does not have preassembled seal, and the junction between the inside of the outside of joint and pipe is filled out with the sealing purpose adhesive.Make the gap too big as undesirable increase, stick with glue agent and just can not obtain enough sealings owing to pipe diameter.Even adhesive has been fixed safely, owing to causing caliber, vibration, air pressure peak value etc. increase later on, also may go wrong.
In addition, when adopting prefabricated tubulose fastener to be added in the outside of pipe, the variation of pipe diameter also is harmful to.If changing, pipe diameter should not adopt this class device.Summary of the present invention
The objective of the invention is to correct above-mentioned defective, a kind of method and apparatus that is used to produce helically wound cock-seam tubing is provided, it makes the locked-seam slip or the risk of skidding in any direction very low or do not have at all.
Another object of the present invention provides a kind of method and apparatus that is used to produce helically wound cock-seam tubing, makes pipe keep their diameter constant storing, lift, transport, send to and be installed in the final position.
Specific purposes of the present invention provide a kind of method and apparatus, and it is easy to be installed on the existing machine.
According to first aspect of the present invention, these purposes can be reached by the method and apparatus of setting in the independent claims 1 and 9 of annex, and their most preferred embodiment and modification thereof are limited by dependent claims 2-8 and 10-19 respectively.
The present invention makes and avoids the locked-seam slip to become possibility, and can obtain further advantage.
According to a significant advantage of above-mentioned first aspect is that isolated distortion from the locked-seam is found out immediately: problematic pipe has a firm internal lock locked-seam, thereby causes pipe diameter constant.Another advantage provides such internal lock anamorphic attachment for cinemascope and can be contained on the new engine, also can be used as an optional equipment and easily is contained on the existing machine.
According to a preferred embodiment of the present invention,, provide the wearing and tearing of the device of internal lock distortion can keep very low if the internal lock deformation processing becomes a bossing on the pipe locked-seam.Preferably the pinch roll of clamp assembly has circumferential slot, and this groove has a recess that forms the locked-seam bossing at least.
For reducing the danger of sliding, on each spiral coil of locked-seam, has an internal lock distortion at least.
According to second aspect of the present invention, can also achieve the goal by adopting independent claims 20 and 23 method and apparatus of setting in the annex, their most preferred embodiment and distortion are limited by dependent claims 21-22 and 24-25 respectively.Brief description of the drawings
Now with reference to example accompanying drawing invention is described as preferred embodiment.
Fig. 1 roughly illustrates a kind of machine of helically wound cock-seam tubing.
Fig. 2 roughly illustrates the clamp assembly that is installed on the machine of the present invention.
Fig. 3 illustrates the helically wound cock-seam tubing of producing with method and apparatus of the present invention.
Fig. 4 is the enlarged drawing of pipe locked-seam among Fig. 3.
Fig. 5 is the enlarged drawing of locked-seam section shown in Figure 3.
Fig. 6 is the partial view of pinch roll embodiment.
A recess of Fig. 7 presentation graphs 6 pinch rolls.
The part of Fig. 8 presentation graphs 6 pinch rolls one side.
Fig. 9 is the profile of Fig. 6 pinch roll, and chain-dotted line is represented locked-seam.
Figure 10 is the partial view of second embodiment of pinch roll.
Figure 11 represents the fin of Figure 10 pinch roll.
Figure 12 represents the part of pinch roll one side.
Figure 13 is Figure 10 pinch roll profile, and chain-dotted line is represented locked-seam.
Figure 14 represents to adopt the pipe of Figure 10 pinch roll production.
Figure 15 illustrates the amplifier section of pipe locked-seam among Figure 14.
Figure 16 illustrates the amplifier section of locked-seam section shown in Figure 14.
Figure 17 represents the section of the locked-seam in an alternative embodiment of the invention.
Figure 18-22 expression is according to the section of various locked-seams of the present invention.
Method and apparatus of the present invention mainly can be used for usually as shown in Figure 1 in this class machine.This machine basic with mention in the mode of introducing GB-A-2213748 openly in this machine of description corresponding, the part 47,48 that adds in Fig. 1 is relevant with one embodiment of the present of invention, will describe later on.
By adopting clamping device as shown in Figure 2 can improve machine shown in Figure 1.This clamping device can be installed in or be connected on the forming head.Clamping device according to first embodiment comprises a pinch roll 30 with axle 31, supports axle 31 rotationally by the bearing 32 (briefly showing) that is installed on the forming head 14 (Fig. 1).One has axle 35 secondary roller 34, by bearing 36 (briefly showing) back shaft 35 rotationally that is installed on the pipe 33 internal shaping heads 14 (Fig. 1).The locked-seam 37 of pipe 33 is clipped between two rollers, 30,34 peripheries at clamping point.Clamping pressure can be regulated by device 38 (briefly showing), acts in a direction indicated by the arrow on the axle 31.
Device shown in Figure 2 is by following situation work.The metal tape with longitudinal edge portions 16 12 by roller 13 (Fig. 1) processing is processed on forming head.For avoiding the slip of locked-seam, the distortion 41 that is shaped by the recess 40 of pinch roll 30 makes engagement edge part 16 distortion and internal locks.In first embodiment shown in Figure 2, distortion 41 at interval is locked-seam 37 ledges.In the fastening locked-seam of this mate 16, thereby make pipe 33 have fixing diameter.The slip of locked-seam 37 also is prevented.
Be out of shape a relevant important advantage of this feature with the internal lock on locked-seam 37, be to provide a kind of shape of ledge, thereby the wear intensity that can be used in the clamping device of machining deformation remains on the very low magnitude of known device that is used for producing helically wound cock-seam tubing.
Heave or the distortion 41 of projection is represented more in detail in Figure 41, locked-seam 37 as shown in Figure 5.
The recess 40 of the pinch roll 30 of first embodiment is shown specifically in Fig. 6-9, and recess 40 is wideer than groove 39 on the thickness direction of pinch roll 30.The section of Fig. 9 is illustrated in the distortion 41 of locked-seam in the recess 40.
Certainly, the internal lock deformation energy of locked-seam 37 is obtained by alternate manner.Second embodiment of pinch roll 30 has been shown in Figure 10-12.In this embodiment, do not have recess but in groove 39, have a horizontal fin 42.On the clamping point of roller 30,34 (Fig. 2), fin 42 is pressed into locked-seam 37, therefore forms a pit.Fin 42 can have same width with groove 39.
Section shown in Figure 13 represents the internal lock distortion 43 of locked-seam is how to process in the groove 39 of pinch roll 30.Fin 42 forms a pit in locked-seam.
Figure 14 represents that one has with the interval pit of the pinch roll of second embodiment processing or is out of shape 43 the pipe with locked-seam 37 33.Figure 15 illustrates the details of distortion 43.Pit 43 must be deeply to being enough to form enough internal locks between the marginal portion of locked-seam 37.
In the embodiment of above-mentioned two pinch rolls, in each spiral turns of locked-seam 37, has an internal lock distortion 42,43 at least.If yet require very strong internal lock effect, in each spiral turns, also can process a plurality of distortion 42,43.
As the substitute to above-mentioned internal lock distortion 41,43, the surface of the marginal portion 16 with 12 can have annular knurl 45, thereby meshes for bringing each other to rub in the clamp operation of processing locked-seam 37, as shown in figure 17.Annular knurl 45 is processed on the marginal portion by the device 46 that Figure 17 briefly shows, and annular knurl preferably adopts roller 13 as shown in Figure 1 to process in advance.This knurling roller (not shown) can be driven.
Another aspect of the present invention is shown in Figure 18-22.In this case, a flexible strap 47 is pressed into locked-seam 37 as rubber strip, by suitable adjustable clamp compaction forces, will play an effect that increases friction element between with 12 hook-type marginal portion 16 with 47, thereby the internal lock effect is provided.As shown in the figure, the flexibility band of compression can be inserted in the diverse location of curved edge part 16.
Owing to be with 47 entirely on locked-seam, thereby can reach splendid sealing effectiveness.With 47 insert with locked-seam 37 that forming head 14 links to each other in.That preferably will insert is carried by the spool 48 that is contained in machine with 47.In Fig. 1, briefly show spool 48.
Because with 47 friction effect, the slip of locked-seam can be avoided, guarantee good sealing simultaneously.Has round section with 47 in insertion with before being pressed into locked-seam.
Insertion can be joined together with the internal lock distortion 41,43 that is obtained by above-mentioned pinch roll 30 with 47.The embodiment that replaces
According to the embodiment of above-mentioned pinch roll, pinch roll is placed in tube exterior, and secondary roller is placed in tube interior.Yet pinch roll is placed in the pipe, and secondary roller is placed in outside the pipe equally also can obtain desired pit or distortion.In order to both can be placed on the circumference of pinch roll, also can be placed on the circumference of secondary roller at the hook spare (as a recess or a fin) that the internal lock distortion is provided on the locked-seam.In addition, on pinch roll or secondary roller, can have more than one recess or fin.Important thing is to reach desirable internal lock effect.
The embodiment of two pinch rolls is joined together, and such pinch roll not only has above-mentioned recess but also have above-mentioned fin, and this also is good.
Claims (25)
1. a method of producing helically wound cock-seam tubing by the metal tape with longitudinal edge portions may further comprise the steps: above-mentioned belt is delivered to a forming head; On above-mentioned forming head above-mentioned belt is processed into spirality, the above-mentioned marginal portion of above-mentioned spiral processing belt enters and is meshing with each other at this moment; The above-mentioned engagement edge part that clamps above-mentioned belt is to process the locked-seam by the helically coiling on the pipe of above-mentioned forming head processing; Above-mentioned helically wound cock-seam tubing is sent above-mentioned forming head; Thereby isolated distortion is provided on above-mentioned locked-seam, lives in to state the above-mentioned engagement edge part of the above-mentioned belt of locked-seam with internal lock.
2. according to the process of claim 1 wherein that the distortion of above-mentioned internal lock is to provide in the operation of carrying out jointly with above-mentioned forming head.
3. according to the process of claim 1 wherein that above-mentioned internal lock deformation processing becomes the bossing of above-mentioned locked-seam.
4. according to the process of claim 1 wherein that above-mentioned internal lock deformation processing one-tenth is seen as the pit on the above-mentioned locked-seam from above-mentioned pipe outside.
5. be seen as pit on the above-mentioned locked-seam according to the process of claim 1 wherein that above-mentioned internal lock deformation processing becomes from above-mentioned tube interior.
6. according to the process of claim 1 wherein that above-mentioned internal lock deformation processing becomes annular knurl.
7. on every circle spiral locked-seam, provide an internal lock distortion at least according to the process of claim 1 wherein.
8. according to the process of claim 1 wherein that the marginal portion of above-mentioned belt carried out preprocessing before sending into the above-mentioned steps of above-mentioned forming head.
9. one kind is used for being comprised by the device of the metal tape production helically wound cock-seam tubing with longitudinal edge portions: the device that above-mentioned belt is transported to forming head; On above-mentioned forming head, above-mentioned belt is processed into spiral form and makes the intermeshing device in above-mentioned marginal portion of above-mentioned spiral forming band; Clamp the above-mentioned marginal portion of above-mentioned belt, with the clamp assembly of processing helically coiling locked-seam on the pipe of forming head processing; Above-mentioned helically wound cock-seam tubing is exported the device of above-mentioned forming head; With the device that the interval distortion is provided on above-mentioned locked-seam for the above-mentioned engagement edge part of the above-mentioned belt of internal lock on above-mentioned locked-seam.
10. according to the device of claim 9, wherein above-mentioned anamorphic attachment for cinemascope comprises a rotating pinch roll and the rotating secondary roller with periphery with periphery, above-mentioned locked-seam is clipped at clamping point between the above-mentioned periphery of above-mentioned roller, wherein the device that above-mentioned roller provides above-mentioned internal lock to be out of shape on the above-mentioned locked-seam that has on its periphery at above-mentioned clamping point.
11. according to the device of claim 10, wherein above-mentioned pinch roll has circumferential slot, this trough comprises at least one recess, in order to the above-mentioned internal lock distortion of locked-seam bossing shape to be provided.
12. according to the device of claim 10, wherein above-mentioned pinch roll has the circumferential slot that comprises a fin at least.
13. according to the device of claim 10, wherein above-mentioned pinch roll is placed in the outside of the pipe of processing, above-mentioned secondary roller is placed in the inside of the pipe of processing.
14. according to the device of claim 10, wherein above-mentioned pinch roll is placed in the inside of the pipe of processing, above-mentioned secondary roller is placed in the outside of the pipe of processing.
15. according to the device of claim 9, wherein above-mentioned anamorphic attachment for cinemascope is positioned to above-mentioned forming head and is connected.
16. according to the device of claim 10, wherein above-mentioned pinch roll and above-mentioned secondary roller have the axle that is supported rotationally by above-mentioned forming head respectively.
17. according to the device of claim 9, also be included in the device that annular knurl is provided on the above-mentioned marginal portion of above-mentioned belt, above-mentioned annular knurl forms above-mentioned internal lock distortion.
18., also comprise in order to regulate the device of clamping pressure between the above-mentioned roller according to the device of claim 10.
19., also be included in above-mentioned belt delivered to the device that above-mentioned forming head is processed the above-mentioned marginal portion of above-mentioned belt before in advance according to the device of claim 9.
20. the method by the metal tape production helically wound cock-seam tubing with longitudinal edge portions comprises the following steps: above-mentioned belt is delivered to forming head; Above-mentioned belt is processed into spirality on above-mentioned forming head, the above-mentioned marginal portion of above-mentioned spiral forming band enters and is meshing with each other at this moment; Clamp the above-mentioned engagement edge part of above-mentioned belt, with the locked-seam of processing helically coiling on the pipe of in above-mentioned forming head, processing; Above-mentioned helically wound cock-seam tubing is sent above-mentioned forming head; The flexibility band is inserted above-mentioned locked-seam; Compress the above-mentioned belt in the above-mentioned locked-seam, with the above-mentioned marginal portion of the above-mentioned belt in the above-mentioned locked-seam of friction internal lock.
21. according to the method for claim 20, wherein above-mentioned belt runs through above-mentioned helically coiling locked-seam.
22. according to the method for claim 20, wherein above-mentioned pressurization is carried out when clamp operation.
23. the device by the metal tape production helically wound cock-seam tubing with longitudinal edge portions comprises: the device of above-mentioned belt being delivered to forming head; On above-mentioned forming head, above-mentioned belt is processed into spirality and makes the above-mentioned marginal portion of above-mentioned spiral forming band enter intermeshing device; Clamp the clamp assembly of the above-mentioned engagement edge part of above-mentioned belt with processing helically coiling locked-seam on the pipe of in above-mentioned forming head, processing; Above-mentioned helically wound cock-seam tubing is sent the device of above-mentioned forming head; A flexible band is inserted the device of above-mentioned locked-seam; Compress above-mentioned belt in the above-mentioned locked-seam with the device of the above-mentioned marginal portion of above-mentioned belt in the friction internal lock above-mentioned locked-seam.
24., also comprise the above-mentioned clamping device that compresses work that is used for above-mentioned belt according to the device of claim 23.
25. according to the device of claim 23, wherein above-mentioned belt has circular section before insertion, and is made of elastomeric material.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40075295A | 1995-03-08 | 1995-03-08 | |
| US08/400,752 | 1995-03-08 | ||
| SE9501750A SE507901C2 (en) | 1995-03-08 | 1995-05-12 | Method and apparatus for making spiral-folded tubes, and such spiral-folded tubes |
| SE95017505 | 1995-05-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177935A true CN1177935A (en) | 1998-04-01 |
| CN1077463C CN1077463C (en) | 2002-01-09 |
Family
ID=26662299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96192419A Expired - Fee Related CN1077463C (en) | 1995-03-08 | 1996-03-06 | Method and apparatus for producing helically wound cock-seam tubing |
Country Status (14)
| Country | Link |
|---|---|
| EP (2) | EP1266704A1 (en) |
| JP (1) | JPH11501256A (en) |
| CN (1) | CN1077463C (en) |
| AT (1) | ATE229850T1 (en) |
| AU (1) | AU4961296A (en) |
| CA (1) | CA2214493C (en) |
| CZ (1) | CZ293154B6 (en) |
| DE (1) | DE69625525T2 (en) |
| DK (1) | DK1015145T3 (en) |
| ES (1) | ES2187636T3 (en) |
| HU (1) | HU223347B1 (en) |
| NO (1) | NO312017B1 (en) |
| PL (1) | PL179477B1 (en) |
| WO (1) | WO1996027455A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909279A (en) * | 2011-12-30 | 2013-02-06 | 中山市奥美森自动化设备有限公司 | Expansion rod conveyor |
| CN102966811A (en) * | 2012-11-01 | 2013-03-13 | 江苏澄工机械制造有限公司 | Galvanized spiral gas drainage pipe and processing method thereof |
| CN103097048A (en) * | 2010-07-21 | 2013-05-08 | 保罗·麦克米伦 | Flexible tube, manufacturing method and apparatus |
| CN110253912A (en) * | 2019-06-27 | 2019-09-20 | 盐城工学院 | A kind of spiral air duct molding machine |
| CN110997170A (en) * | 2017-07-31 | 2020-04-10 | 泽菲罗有限责任公司 | Apparatus for continuously forming spiral seam conduit, forming method and spiral conduit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007035289A2 (en) * | 2005-09-20 | 2007-03-29 | Helix International, Inc. | Machine to produce expanded metal spirally lock-seamed tubing from solid coil stock |
| DE102013013735B4 (en) * | 2013-08-21 | 2018-12-27 | Fritz Hahn Gmbh & Co. Kg | Apparatus and method for producing a spiral-folded tube and a spiral-folded tube produced by the device and by the method from a profiled metal strip |
| CN104190768A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Copper tube edge rolling process and mold for copper tube edge rolling process |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE34871C (en) * | E. LEVA VASSEUR und H. WITZENMANN in Paris | Flexible metal tube with inlaid rubber strips | ||
| US1479201A (en) * | 1921-11-07 | 1924-01-01 | Naylor Robertson Company | Spiral pipe |
| US1718983A (en) * | 1926-12-06 | 1929-07-02 | Rome Mfg Company | Lock-joint metal tubing |
| US2339219A (en) * | 1940-08-03 | 1944-01-11 | Crowiey Edward Chase | Method and machine for making tubes |
| GB681337A (en) * | 1948-12-03 | 1952-10-22 | Adolf Thies | Improvements in rain-water pipes, with method and device for their manufacture |
| FR996496A (en) * | 1949-10-03 | 1951-12-19 | Manufacturing process for tubes and tubes obtained by this process | |
| DE1082567B (en) * | 1955-07-05 | 1960-06-02 | Grundstuecksverwaltungsgesells | Process for the manufacture of folded screw sutures and device for carrying out the process |
| DE1452446B1 (en) * | 1960-02-15 | 1970-03-12 | Emil Siegwart | Spiral duct |
| FI40528B (en) * | 1966-12-21 | 1968-11-30 | Eino Kalervo Malki | |
| US3604464A (en) * | 1968-11-04 | 1971-09-14 | Callahan Mining Corp | Bendable metal duct |
| US3940962A (en) * | 1974-05-09 | 1976-03-02 | Pacific Roller Die Company, Incorporated | Conduit making machine with diameter control and method |
| GB2213748B (en) * | 1987-12-21 | 1991-10-09 | Spiro Machines Sa | Production of spirally-seamed corrugated metal tubing |
| DE4130739A1 (en) * | 1991-08-08 | 1993-02-11 | Witzenmann Metallschlauchfab | METAL WRAP HOSE |
-
1996
- 1996-03-06 AU AU49612/96A patent/AU4961296A/en not_active Abandoned
- 1996-03-06 DE DE69625525T patent/DE69625525T2/en not_active Expired - Lifetime
- 1996-03-06 EP EP02014515A patent/EP1266704A1/en not_active Withdrawn
- 1996-03-06 WO PCT/SE1996/000292 patent/WO1996027455A1/en active IP Right Grant
- 1996-03-06 CZ CZ19972826A patent/CZ293154B6/en not_active IP Right Cessation
- 1996-03-06 CN CN96192419A patent/CN1077463C/en not_active Expired - Fee Related
- 1996-03-06 HU HU9801707A patent/HU223347B1/en not_active IP Right Cessation
- 1996-03-06 EP EP96906144A patent/EP1015145B1/en not_active Expired - Lifetime
- 1996-03-06 JP JP8526807A patent/JPH11501256A/en active Pending
- 1996-03-06 ES ES96906144T patent/ES2187636T3/en not_active Expired - Lifetime
- 1996-03-06 CA CA002214493A patent/CA2214493C/en not_active Expired - Fee Related
- 1996-03-06 AT AT96906144T patent/ATE229850T1/en active
- 1996-03-06 DK DK96906144T patent/DK1015145T3/en active
-
1997
- 1997-09-02 PL PL96322144A patent/PL179477B1/en not_active IP Right Cessation
- 1997-09-04 NO NO19974074A patent/NO312017B1/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097048A (en) * | 2010-07-21 | 2013-05-08 | 保罗·麦克米伦 | Flexible tube, manufacturing method and apparatus |
| CN103097048B (en) * | 2010-07-21 | 2016-06-15 | 保罗·麦克米伦 | Flexible pipe, manufacturing method and apparatus |
| CN102909279A (en) * | 2011-12-30 | 2013-02-06 | 中山市奥美森自动化设备有限公司 | Expansion rod conveyor |
| CN102966811A (en) * | 2012-11-01 | 2013-03-13 | 江苏澄工机械制造有限公司 | Galvanized spiral gas drainage pipe and processing method thereof |
| CN102966811B (en) * | 2012-11-01 | 2015-09-30 | 江苏澄工机械制造有限公司 | A kind of zinc-coated spiral gas drainage pipe and processing method thereof |
| CN110997170A (en) * | 2017-07-31 | 2020-04-10 | 泽菲罗有限责任公司 | Apparatus for continuously forming spiral seam conduit, forming method and spiral conduit |
| CN110253912A (en) * | 2019-06-27 | 2019-09-20 | 盐城工学院 | A kind of spiral air duct molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2214493C (en) | 2006-05-02 |
| EP1015145A1 (en) | 2000-07-05 |
| AU4961296A (en) | 1996-09-23 |
| PL179477B1 (en) | 2000-09-29 |
| NO974074D0 (en) | 1997-09-04 |
| CZ293154B6 (en) | 2004-02-18 |
| DE69625525T2 (en) | 2003-09-04 |
| WO1996027455A1 (en) | 1996-09-12 |
| CZ282697A3 (en) | 1999-04-14 |
| EP1015145B1 (en) | 2002-12-18 |
| HUP9801707A3 (en) | 2000-06-28 |
| CN1077463C (en) | 2002-01-09 |
| NO312017B1 (en) | 2002-03-04 |
| ATE229850T1 (en) | 2003-01-15 |
| CA2214493A1 (en) | 1996-09-12 |
| DE69625525D1 (en) | 2003-01-30 |
| HUP9801707A2 (en) | 1998-11-30 |
| EP1266704A1 (en) | 2002-12-18 |
| HU223347B1 (en) | 2004-06-28 |
| ES2187636T3 (en) | 2003-06-16 |
| JPH11501256A (en) | 1999-02-02 |
| DK1015145T3 (en) | 2003-04-07 |
| NO974074L (en) | 1997-10-27 |
| PL322144A1 (en) | 1998-01-05 |
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